1 EXHIBIT 11 STATEMENT RE COMPUTATION OF PER SHARE EARNINGS OHM CORPORATION COMPUTATION OF PER SHARE EARNINGS (IN THOUSANDS, EXCEPT PER SHARE DATA) Years Ended December 31, 1996 1995 1994 ---- ---- ---- PRIMARY: Average Shares Outstanding 26,820 22,283 15,582 Net effect of dilutive stock options and warrants-- based on the treasury stock method 24 242 - ------- ------- -------- Total 26,844 22,525 15,582 ======= ======= ======== Net income (loss) $11,515 $ 6,807 $ (7,616) ======= ======= ======== Per share amount $ 0.43 $ 0.30 $ (0.49) ======= ======= ======== FULLY DILUTED: Average shares outstanding 26,820 22,283 15,582 Net effect of dilutive stock options and warrants-- based on the treasury stock method 43 (2) 242 (2) - (1) ------- ------- -------- Total 26,863 22,525 15,582 ======= ======= ======= Net income (loss) $11,515 $ 6,807 $(7,616) ======= ======= ======== Per share amount $ 0.43 $ 0.30 $ (0.49) ======= ======= ======== (1) Fully dilutive effect of stock options and warrants on per share amounts for the year ended December 31, 1994 were antidilutive. Accordingly, fully diluted per share amounts were not presented in the Company's consolidated statements of operations. (2) Fully dilutive effect of stock options and warrants on per share amounts for the years ended December 31, 1996 and 1995 have not been presented in the statement of operations since any reduction of less than 3% in the aggregate need not be considered as dilution.